Weather patterns affect our mosquito management program

Our mosquito management program is affected by the changes in weather patterns from year to year.

Our program is usually aligned to the increase in rainfall and the warmer weather. 

Mosquito numbers are likely to continue to fluctuate in response to environmental factors, such as the predicted La Nina weather event. Dr Cameron Webb by (University of Sydney & NSW Health Pathology) explains this weather pattern will significantly increase mosquito numbers in areas like those around Geelong and the Bellarine. 

The past five years have seen lower than usual rainfall and therefore the numbers of mosquitos has not been as high. 

The recent increased rain and milder temperatures over winter and spring provided ideal breeding conditions for mosquitoes. These conditions have led to a significant rise in the mosquito numbers across Greater Geelong. 

We monitor and treat large wetlands which are known breeding areas. Our treatment regime must be done in the larval stage to prevent adult mosquitoes from emerging. To be effective, larvae treatment must occur within a few days during the certain stages of development. Unfortunately, once they’ve emerged, nothing can be done. 

Residents can help us to keep mosquito numbers down by keeping their pools, spas and fishponds maintained, as well as regularly removing water from blocked gutters, old pots, toys, bird baths or stagnant ponds around the home. Plus make sure any openings to your rainwater tanks are covered with mesh.

Community members are also encouraged to protect themselves and their families from mosquito bites by:

  • wearing clothing that is light coloured and loose fitting
  • covering arms, legs and feet
  • using an effective insect repellent.

Page last updated: Monday, 11 September 2023